/*******************************************************************************
 * Copyright 2011-2013 Sergey Tarasevich
 * <p>
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *******************************************************************************/
package com.nostra13.universalimageloader.core.assist;

import android.widget.ImageView;
import android.widget.ImageView.ScaleType;

/**
 * Simplify {@linkplain ScaleType ImageView's scale type} to 2 types: {@link #FIT_INSIDE} and {@link #CROP}
 *
 * @author Sergey Tarasevich (nostra13[at]gmail[dot]com)
 * @since 1.6.1
 */
public enum ViewScaleType {
    /**
     * Scale the image uniformly (maintain the image's aspect ratio) so that at least one dimension (width or height) of
     * the image will be equal to or less the corresponding dimension of the view.
     */
    FIT_INSIDE,
    /**
     * Scale the image uniformly (maintain the image's aspect ratio) so that both dimensions (width and height) of the
     * image will be equal to or larger than the corresponding dimension of the view.
     */
    CROP;

    /**
     * Defines scale type of ImageView.
     *
     * @param imageView {@link ImageView}
     * @return {@link #FIT_INSIDE} for
     *         <ul>
     *         <li>{@link ScaleType#FIT_CENTER}</li>
     *         <li>{@link ScaleType#FIT_XY}</li>
     *         <li>{@link ScaleType#FIT_START}</li>
     *         <li>{@link ScaleType#FIT_END}</li>
     *         <li>{@link ScaleType#CENTER_INSIDE}</li>
     *         </ul>
     *         {@link #CROP} for
     *         <ul>
     *         <li>{@link ScaleType#CENTER}</li>
     *         <li>{@link ScaleType#CENTER_CROP}</li>
     *         <li>{@link ScaleType#MATRIX}</li>
     *         </ul>
     */
    public static ViewScaleType fromImageView(ImageView imageView) {
        switch (imageView.getScaleType()) {
            case FIT_CENTER:
            case FIT_XY:
            case FIT_START:
            case FIT_END:
            case CENTER_INSIDE:
                return FIT_INSIDE;
            case MATRIX:
            case CENTER:
            case CENTER_CROP:
            default:
                return CROP;
        }
    }
}
